f perfection and nature. But the essence of
the soul is related to the powers, as a subject to its proper
accidents, which follow their subject both in the order of generation
and in that of perfection. Consequently the comparison fails.

Reply Obj. 4: Concupiscence, in relation to original sin, holds the
position of matter and effect, as stated above (Q. 82, A. 3).
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THIRD ARTICLE [I-II, Q. 83, Art. 3]

Whether Original Sin Infects the Will Before the Other Powers?

Objection 1: It would seem that original sin does not infect the will
before the other powers. For every sin belongs chiefly to that power
by whose act it was caused. Now original sin is caused by an act of
the generative power. Therefore it seems to belong to the generative
power more than to the others.

Obj. 2: Further, original sin is transmitted through the carnal
semen. But the other powers of the soul are more akin to the flesh
than the will is, as is evident with regard to all the sensitive
powers, which use a bodily organ. Therefore original sin is in them
more than in the will.

Obj. 3: Further, the intellect precedes the will, for the object of
the will is only the good understood. If therefore original sin
infects all the powers of the soul, it seems that it must first of
all infect the intellect, as preceding the others.

_On the contrary,_ Original justice has a prior relation to the will,
because it is "rectitude of the will," as Anselm states (De Concep.
Virg. iii). Therefore original sin, which is opposed to it, also has
a prior relation to the will.

_I answer that,_ Two things must be considered in the infection of
original sin. First, its inherence to its subject; and in this
respect it regards first the essence of the soul, as stated above (A.
2). In the second place we must consider its inclination to act; and
in this way it regards the powers of the soul. It must therefore
regard first of all that power in which is seated the first
inclination to commit a sin, and this is the will, as stated above
(Q. 74, AA. 1, 2). Therefore original sin regards first of all the
will.

Reply Obj. 1: Original sin, in man, is not caused by the generative
power of the child, but by the act of the parental generative power.
Consequently, it does not follow that the child's generative power is
the subject of original sin.

Reply Obj. 2: Original sin spreads in two ways; from the flesh to the
soul, and from the essence